KMidimon monitors events coming from a MIDI external port or application via the ALSA sequencer, or Standard MIDI Files. It is especially useful if you want to debug MIDI software or your MIDI setup. It features a nice graphical user interface, customizable event filters and sequencer parameters, support for all MIDI messages and some ALSA messages, MIDI playback, and saving the recorded event list to a text file or SMF.

annoyme is a program that plays a sound effect every time you hit a key on your keyboard to give you the feeling you are using a real typewriter. This can be used to impress colleagues with your typing skills or just for sentimental reasons. It supports various sound input methods, as well as multiple output libraries like ALSA or AO. Most importantly, it is also possible to add more sound themes. Currently, only input for XEvIE (on an X Server) is supported.

airmix shows you the volume level of your ALSA-supported sound card in a similar way as a TV would. If built with LIRC support, you can also use your remote control to change the volume level or mute any channel.

RMP allows remote control over playing your music files on a Linux computer. The music can be controlled via a Web interface, a smart cellphone, iPhone, Blackberry, or through a command line shell interface. If you like the song, you can download it to your phone. It supports next, searching, and volume control.

PigeBox is a complete solution to record continuous (24/7/365) audio content. It provides a bootable GNU/Linux system with all required software components to achieve the storage, the recording, and the extraction of audio content. It has been designed to provide a "plug & record" solution for radio broadcasters.

FB-Mix is designed to sit in the Fluxbox system tray and popup an alsamixer window when clicked. It should also work with other window managers. As of version 0.2, volume can also be adjusted using the mouse scrollwheel when hovering over the icon.

PlayaPlaya is a "fire-and-forget" audiobook player that stays out of your way and just works. Logout, and it'll save your place. Launch PlayaPlaya again, and it'll resume where you left off. Launch it with different playlists, and it'll track each one separately.

Desfonema Sequencer is a tracker-inspired MIDI sequencer. It uses a pattern oriented design, with n tracks by pattern. It offers a piano roll editor for tracks, and a tabbed track interface for patterns. It features convenient keyboard shortcuts, a virtual keyboard, step and live editing, MIDI input (ALSA), and a text-based file format that is easy to edit manually or merge and better suited for version systems like Subversion.